Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 255: | \[{13^{255}-1\over12}\] | 3 × 61 × 103 × 443 × 4651 × 30941 × 161971 × 763879 × 28152511 × 1028420611 × 5327925121<10> × 15798461357509<14> × 11435433293542010176161611<26> × 3857977671794877207529716391<28> × 535301324317729848039542278039<30> × 562139171639747303605338416886252422621<39> × 11897088505233796972676265272476962505203241<44> × 165494293773437733644600561270714150205969165053875861<54> |